中国物理B ›› 2018, Vol. 27 ›› Issue (12): 123201-123201.doi: 10.1088/1674-1056/27/12/123201

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Up-conversion luminescence tuning in Er3+-doped ceramic glass by femtosecond laser pulse at different laser powers

Wen-Jing Cheng(程文静), Guo Liang(梁果), Ping Wu(吴萍), Shi-Hua Zhao(赵世华), Tian-Qing Jia(贾天卿), Zhen-Rong Sun(孙真荣), Shi-An Zhang(张诗按)   

  1. 1 School of Electronic & Electrical Engineering, Shangqiu Normal University, Shangqiu 476000, China;
    2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 China
  • 收稿日期:2018-08-23 修回日期:2018-09-26 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: Wen-Jing Cheng, Shi-An Zhang E-mail:0110wenjing@163.com;sazhang@phy.ecnu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51132004, 11474096, 11604199, U1704145, and 11747101), the Fund from the Science and Technology Commission of Shanghai Municipality, China (Grant No. 14JC1401500), the Henan Provincial Natural Science Foundation, China (Grant No. 182102210117), and the Higher Educational Key Program of Henan Province of China (Gant Nos. 17A140025 and 16A140030).

Up-conversion luminescence tuning in Er3+-doped ceramic glass by femtosecond laser pulse at different laser powers

Wen-Jing Cheng(程文静)1, Guo Liang(梁果)1, Ping Wu(吴萍)1, Shi-Hua Zhao(赵世华)1, Tian-Qing Jia(贾天卿)2, Zhen-Rong Sun(孙真荣)2, Shi-An Zhang(张诗按)2   

  1. 1 School of Electronic & Electrical Engineering, Shangqiu Normal University, Shangqiu 476000, China;
    2 State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 China
  • Received:2018-08-23 Revised:2018-09-26 Online:2018-12-05 Published:2018-12-05
  • Contact: Wen-Jing Cheng, Shi-An Zhang E-mail:0110wenjing@163.com;sazhang@phy.ecnu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 51132004, 11474096, 11604199, U1704145, and 11747101), the Fund from the Science and Technology Commission of Shanghai Municipality, China (Grant No. 14JC1401500), the Henan Provincial Natural Science Foundation, China (Grant No. 182102210117), and the Higher Educational Key Program of Henan Province of China (Gant Nos. 17A140025 and 16A140030).

摘要:

The up-conversion luminescence tuning of rare-earth ions is an important research topic for understanding luminescence mechanisms and promoting related applications. In this paper, we experimentally study the up-conversion luminescence tuning of Er3+-doped ceramic glass excited by the unshaped, V-shaped and cosine-shaped femtosecond laser field with different laser powers. The results show that green and red up-conversion luminescence can be effectively tuned by varying the power or spectral phase of the femtosecond laser field. We further analyze the up-conversion luminescence tuning mechanism by considering different excitation processes, including single-photon absorption (SPA), two-photon absorption (TPA), excited state absorption (ESA), and energy transfer up-conversion (ETU). The relative weight of TPA in the whole excitation process can increase with the increase of the laser power, thereby enhancing the intensity ratio between green and red luminescence (I547/I656). However, the second ETU (ETU2) process can generate red luminescence and reduce the green and red luminescence intensity ratio I547/I656, while the third ESA (ESA3) process can produce green luminescence and enhance its control efficiency. Moreover, the up-conversion luminescence tuning mechanism is further validated by observing the up-conversion luminescence intensity, depending on the laser power and the down-conversion luminescence spectrum under the excitation of 400-nm femtosecond laser pulse. These studies can present a clear physical picture that enables us to understand the up-conversion luminescence tuning mechanism in rare-earth ions, and can also provide an opportunity to tune up-conversion luminescence to promote its related applications.

关键词: rare-earth ions, up-conversion luminescence, pulse shaping, two-photon absorption

Abstract:

The up-conversion luminescence tuning of rare-earth ions is an important research topic for understanding luminescence mechanisms and promoting related applications. In this paper, we experimentally study the up-conversion luminescence tuning of Er3+-doped ceramic glass excited by the unshaped, V-shaped and cosine-shaped femtosecond laser field with different laser powers. The results show that green and red up-conversion luminescence can be effectively tuned by varying the power or spectral phase of the femtosecond laser field. We further analyze the up-conversion luminescence tuning mechanism by considering different excitation processes, including single-photon absorption (SPA), two-photon absorption (TPA), excited state absorption (ESA), and energy transfer up-conversion (ETU). The relative weight of TPA in the whole excitation process can increase with the increase of the laser power, thereby enhancing the intensity ratio between green and red luminescence (I547/I656). However, the second ETU (ETU2) process can generate red luminescence and reduce the green and red luminescence intensity ratio I547/I656, while the third ESA (ESA3) process can produce green luminescence and enhance its control efficiency. Moreover, the up-conversion luminescence tuning mechanism is further validated by observing the up-conversion luminescence intensity, depending on the laser power and the down-conversion luminescence spectrum under the excitation of 400-nm femtosecond laser pulse. These studies can present a clear physical picture that enables us to understand the up-conversion luminescence tuning mechanism in rare-earth ions, and can also provide an opportunity to tune up-conversion luminescence to promote its related applications.

Key words: rare-earth ions, up-conversion luminescence, pulse shaping, two-photon absorption

中图分类号:  (Coherent control of atomic interactions with photons)

  • 32.80.Qk
32.80.Wr (Other multiphoton processes) 61.46.Hk (Nanocrystals)